CANNES, France — Just the sight of Harrison Ford was all it took to turn a roomful of journalists into weepy, cheering fans. As Ford’s name was announced at the Friday morning news conference for the premiere of his fifth and final outing as Indiana Jones, reporters in attendance burst into a sustained round of applause. When he appeared to be holding back tears while answering questions — which was often! — an audible “Awwww!” rippled through the room.